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Location Requirements

The Flame Lock™ Safety System is designed to reduce the 
risk of flammable vapor-related fires. The patented system 
protects your family by trapping the burning vapors within 
the water heater combustion chamber through the special 
flame-trap. The burning vapors literally “burn themselves 
out” without escaping back into the room. In the event of a 
flammable vapor incident, the Flame Lock™ Safety System 
shuts off the gas supply to the water heater’s burner and 
pilot, preventing re-ignition of any remaining flammable 
vapors in the area. This will disable the water heater until 
the system is reset. Note: Not following these instructions 
and/or an inadequate air supply can cause the Flame 
Lock™ Safety System to disable the water heater. Please 
make required installation and venting/air supply changes 
prior to resetting the system.

IMPORTANT: This water heater has a resettable thermal 
switch installed as part of the Flame Lock

 Safety System. 

DO NOT attempt to disable or modify this feature in any way.

Do not use or store flammable products such as gasoline, 
solvents, or adhesives in the same room or area near the 
water heater. If such flammables must be used, all gas 
burning appliances in the vicinity must be shut off and their 
pilot lights extinguished. Open the doors and windows for 
ventilation while flammable substances are in use. 

If flammable liquids or vapors have spilled or leaked in the 
area of the water heater, leave the area immediately and 
call the fire department from a neighbor’s home. Do not 
attempt to clean the spill until all ignition sources have been 
extinguished.

Do not store combustible materials (boxes, magazines, 
clothes, etc.) on or in close proximity to the water heater.

Site Location

• 

Select a location near the center of the water piping 
system. The water heater must be installed indoors 
and in a vertical position on a level surface. DO NOT 
install in bathrooms, bedrooms, or any occupied room 
normally kept closed.

• 

Locate the water heater as close to the chimney or gas 
vent as practical. Consider the vent system piping and 
combustion air supply requirements when selecting the 
water heater location. The venting system must be able 
to run from the water heater to termination with minimal 
length and elbows. 

• 

Locate the water heater near the existing gas piping. 
If installing a new gas line, locate the water heater to 
minimize the pipe length and elbows. 

NOTE:  This water heater must be installed according to all 
local and state codes or, in the absence of local and state 
codes, the “National Fuel Gas Code”, ANSI Z223.1(NFPA 
54)-latest edition.

Carbon Monoxide Poisoning Hazard

Do not install in a mobile home.

Doing so can result in death or 
carbon monoxide poisoning.

WARNING

FIRE AND EXPLOSION HAZARD

Can result in serious injury or death

        Do not store or use gasoline or other 
flammable vapors and liquids in the 
vicinity of this or any other appliance. 
Storage of or use of gasoline or other 
flammable vapors or liquids in the vicinity 
of this or any other appliance can result in 
serious injury or death.

Flammable Vapors

FLAMMABLES

Read and follow water heater warnings and 
instructions.

WARNING

Summary of Contents for 6510374

Page 1: ...sion may result causing property damage personal injury or death INSTALLER AFFIX THESE INSTRUCTIONS TO OR ADJACENT TO THE WATER HEATER OWNER RETAIN THESE INSTRUCTIONS AND WARRANTY FOR FUTURE REFERENCE RETAIN THE ORIGINAL RECEIPT AS PROOF OF PURCHASE Table of Contents 2 6510374 W10100870 February 2006 Energy Smart Gas Water Heater with the Flame Lock Safety System To obtain technical warranty or se...

Page 2: ...if any part has been under water Immediately call a qualified service technician Water heaters subjected to flood conditions or any time the gas controls main burner or pilot have been submerged in water require replacement of the entire water heater Hydrogen gas can be produced in a hot water system that has not been used for a long period of time generally two weeks or more Hydrogen gas is extre...

Page 3: ...the Flame Lock Safety System should only be performed by a qualified person Examples of a qualified person include licensed plumbers authorized gas company personnel and authorized service personnel IMPORTANT This water heater has a resettable thermal switch installed as part of the Flame Lock Safety System DO NOT attempt to disable or modify this feature in any way IMPORTANT The manufacturer and ...

Page 4: ...y and call the fire department from a neighbor s home Do not attempt to clean the spill until all ignition sources have been extinguished Do not store combustible materials boxes magazines clothes etc on or in close proximity to the water heater Site Location Select a location near the center of the water piping system The water heater must be installed indoors and in a vertical position on a leve...

Page 5: ...ble materials are stated on the data plate adjacent to the gas control valve thermostat of the water heater The water heater is certified for installation on a combustible floor IMPORTANT If installing over carpeting the carpeting must be protected by a metal or wood panel beneath the water heater The protective panel must extend beyond the full width and depth of the water heater by at least thre...

Page 6: ... gas supply pressure must not exceed the maximum supply pressure as stated on the water heater s data plate The minimum supply pressure is for the purpose of input adjustment Gas Pressure Testing IMPORTANT This water heater and its gas connection must be leak tested before placing the appliance in operation If the code requires the gas lines to be tested at a pressure exceeding 14 W C the water he...

Page 7: ...e is excluded from warranty coverage The following types of installation not limited to the following will require outdoor air for combustion due to chemical exposure and may reduce but not eliminate the presence of corrosive chemicals in the air beauty shops photo processing labs buildings with indoor pools water heaters installed in laundry hobby or craft rooms water heaters installed near chemi...

Page 8: ...can be drawn from outside of the enclosure One opening shall be within 12 inches of the top and one within 12 inches of the bottom of the enclosure as shown in Figure 4 The size of each opening free area is determined by the total BTUH input of all gas utilization equipment i e water heaters furnaces clothes dryers etc and the method by which the air is provided The BTUH input can be found on the ...

Page 9: ...r supply openings consideration must be given to the blocking effect of protection louvers grilles and screens These devices can reduce airflow which in turn may require larger openings to achieve the required minimum free area Screens must not be smaller than 1 4 mesh If the free area through a particular design of louver or grille is known it should be used in calculating the specified free area...

Page 10: ...ng water heater be sure to use the new drafthood supplied with the water heater Figure 9 Drafthood Installation Sheet Metal Screws four provided Drafthood Jacket top Install the drafthood with the four screws provided Legs Slots Slots Legs Vent Pipe Size It is important that you follow the guidelines in these instructions for sizing a vent pipe system If a transition to a larger vent size is requi...

Page 11: ...erminate with a listed cap or other roof assembly and be installed according to their manufacturer s instructions Gas vents must be supported to prevent damage joint separation and maintain clearances to combustible materials Figures 11 and 12 IMPORTANT This gas vent must be terminated in a vertical position to facilitate the removal of the burnt gases An unused chimney flue or masonry enclosure m...

Page 12: ...t line It should be located close to the water heater and be easily accessible Know the location of this valve and how to shut off the water to the heater 6 A temperature and pressure relief valve must be installed in the opening marked Temperature and Pressure T P Relief Valve on the water heater A discharge line must be added to the opening of the T P Relief Valve Follow the instructions under T...

Page 13: ... the requirements for Relief Valves and Automatic Shut off Devices for Hot Water Supply Systems ANSI Z21 22 The function of the temperature and pressure relief valve is to discharge water in large quantities in the event of excessive temperature or pressure developing in the water heater The valve s relief pressure must not exceed the working pressure of the water heater as stated on the data plat...

Page 14: ... water outlet pipe Special Applications Combination Space Heating Potable Water System Some water heater models are equipped with inlet outlet tappings for use with space heating applications If this water heater is to be used to supply both space heating and domestic potable drinking water the instructions listed below must be followed The unit must be set to standard mode See Operating the Tempe...

Page 15: ...s for possible gas leaks Correct any leak found Important Information About Your Water Heater This gas water heater was manufactured to voluntary safety standards to reduce the likelihood of a flammable vapor ignition incident New technology used in meeting these standards makes this product less tolerant of installation errors or improper installation environments Please review the following info...

Page 16: ...s completely filled with water before lighting the pilot Check the data plate near the gas control valve thermostat for the correct gas Do not use this water heater with any gas other than the one listed on the data plate If you have any questions or doubts consult your gas supplier or gas utility company Explosion Hazard Replace viewport if glass is missing or damaged Failure to do so can result ...

Page 17: ...rson Figure 17 Match Relief Opening Drafthood Figure 18 Flame Characteristics Tips may have a yellow tint Yellow inner cones are satisfactory Correct flame soft blue Water Temperature Regulation The thermostat is adjusted to the pilot position when it is shipped from the factory Water temperature can be regulated by moving the temperature dial to the preferred setting The preferred starting point ...

Page 18: ...Failure 6 Flashes Indicates Upper Sensor Failure 7 Flashes Indicates Electronic Control Failure 8 Flashes Indicates Valve Failure Continuous Solid Flash indicates system shutdown NOTE If the pilot lights but will only stay lit with the knob depressed in the pilot position look for the following status light codes 6 Second Solid Light followed by 4 Flashes The unit will not relight because it detec...

Page 19: ...vice and Support Department for service information at 1 877 817 6750 3 Inspect your installation for any problems with venting or combustion air 4 Reset the thermal switch by depressing the small button in the center of the thermal switch A high temperature limit switch or ECO Energy Cut Off in the tank is used to shut off the unit if the water temperature exceeds 180 F 83 C The ECO is a single u...

Page 20: ...supplies are not obstructed Build up of soot and carbon on the main burner and pilot burner Check for a soft blue flame Leaking or damaged water and gas piping Presence of flammable or corrosive materials in the installation area Presence of combustible materials near the water heater After servicing this water heater check to make sure it is working properly See Operating Your Water Heater sectio...

Page 21: ...d manifold tube at the gas control valve thermostat Figures 22 23 6 Grasp the manifold tube and push down slightly to free the manifold tube pilot tube and thermopile 7 Carefully remove the manifold assembly from the combustion chamber NOTE Be sure not to damage internal parts Removing the Burner from the Manifold Assembly Natural Gas Burner Low Nox 1 Take off the burner by removing the two 2 scre...

Page 22: ...Assembly Page 23 Figure 25 Two Piece Wire Connector Assembly Thermopile Connector Two Piece Wire Connector Pilot Tube Igniter Wire Retainer Clip Burner and other fittings not show for clarity Manifold Door Figure 26 Pilot Assembly Pilot Assembly Thermopile Connector Igniter Connector Thermal Switch Connectors Pilot Thermopile External Inspection Cleaning of the Flame trap Inspect the wrap around f...

Page 23: ...re 28B 4 Inspect the door gasket and make sure there is no fiberglass insulation between the door gasket and the combustion chamber 5 Replace the two screws which secure the manifold assembly door to the combustion chamber Tighten securely There should be no space between the gasket part of the manifold door and combustion chamber IMPORTANT Do not operate the water heater if the door gasket does n...

Page 24: ...ions Bubbles forming indicate a leak Correct any leak found If additional information is required contact the Service Department at 1 877 817 6750 TEFLON is a registered trademark of E I Du Pont De Nemours and Company 5 No leaks at pilot and manifold connection 6 Manifold door screws securely tightened 7 Depress the button on the thermal switch 1 Manifold door gasket properly sealed 2 Viewport not...

Page 25: ...iping dip tube must be in cold inlet 8 Advise customer DRIP FROM RELIEF VALVE 1 Excessive water pressure 2 Heater stacking 3 Closed water system 1 Use a pressure reducing valve and relief valve 2 Lower the thermostat setting 3 See Closed System Thermal Expansion THERMOSTAT FAILS TO SHUT OFF 1 Thermostat not functioning properly 2 Improper calibration 1 Replace thermostat 2 Replace thermostat COMBU...

Page 26: ...ng Refrigeration authorized service provider to correct the combustion air supply ventilation issue Correct size of openings to allow sufficient air NO YES YES YES NO Check the vent system for restrictions obstructions and check the vent termination height Refer to the Installation Instructions section of this manual for specific requirements NO Section C Pilot light will not remain lit Contact Cu...

Page 27: ... PILOT ASSEMBLY KIT Natural Gas 13 BURNER Natural Gas Low Nox 14 MANIFOLD DOOR ASSEMBLY Natural Gas Low Nox 15 TWO PIECE WIRE CONNECTOR WITH RETAINER CLIP 16 MANIFOLD DOOR GASKET 17 VIEWPORT ASSEMBLY 18 THERMISTORS Pictured on next page When ordering repair parts always give the following information 1 Model serial and product number 2 Type of gas 3 Item number 4 Parts description Repair Parts Lis...

Page 28: ...opile two piece wire connector with retainer clip thermal switch and pilot assembly Natural Gas Low Nox Item 15 Contains two piece wire connector and retainer clip Item 16 Contains manifold door gasket Item 17 Contains viewport Item 18 Contains replacement thermistors Item 18 WHIRLPOOL FLAME LOCK DESIGN and FLAME LOCK are trademarks of Whirlpool U S A 2006 Whirlpool Corporation All rights reserved...

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